Piston cylinder with Crank and Piston Rings

This is a remix of 11343 Single Cylinder Motor v2.0.

I increased the size so it can include two piston rings. I thought it would be great learning for hands on experience with the functionality of piston rings. To see how well the rings work, just give a puff of air into the cylinder when assembled.

The crank has a 1/4" hex insert for a drill, see video: https://youtu.be/-9GLqgNsoWE

I would like to challenge anyone to further make a valve system for this, that would really be cool.